allow attaching fs_pin to a group not associated with some superblock

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/super.c b/fs/super.c
index eae088f6aaae..2d822459bc3d 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -706,9 +706,9 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
         remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
 
         if (remount_ro) {
-                if (sb->s_pins.first) {
+                if (!hlist_empty(&sb->s_pins)) {
                         up_write(&sb->s_umount);
-                        sb_pin_kill(sb);
+                        group_pin_kill(&sb->s_pins);
                         down_write(&sb->s_umount);
                         if (!sb->s_root)
                                 return 0;